Obsoletes: 2765 (if approved) C. Huitema
Updates: 4291 (if approved) Microsoft Corporation
Intended status: Standards Track M. Bagnulo
-Expires: September 28, 2010 UC3M
+Expires: October 11, 2010 UC3M
M. Boucadair
France Telecom
X. Li
CERNET Center/Tsinghua University
- March 27, 2010
+ April 9, 2010
IPv6 Addressing of IPv4/IPv6 Translators
- draft-ietf-behave-address-format-06.txt
+ draft-ietf-behave-address-format-07.txt
Abstract
Status of this Memo
- This Internet-Draft is submitted to IETF in full conformance with the
+ This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
- Task Force (IETF), its areas, and its working groups. Note that
- other groups may also distribute working documents as Internet-
- Drafts.
+ Task Force (IETF). Note that other groups may also distribute
+ working documents as Internet-Drafts. The list of current Internet-
+ Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
- The list of current Internet-Drafts can be accessed at
- http://www.ietf.org/ietf/1id-abstracts.txt.
+ This Internet-Draft will expire on October 11, 2010.
- The list of Internet-Draft Shadow Directories can be accessed at
- http://www.ietf.org/shadow.html.
-
- This Internet-Draft will expire on September 28, 2010.
+Copyright Notice
+ Copyright (c) 2010 IETF Trust and the persons identified as the
+ document authors. All rights reserved.
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-\f
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-Copyright Notice
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+\f
+Internet-Draft IPv6 Addressing of IPv4/IPv6 Translators April 2010
- Copyright (c) 2010 IETF Trust and the persons identified as the
- document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
- described in the BSD License.
+ described in the Simplified BSD License.
Table of Contents
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+
+
+
+
+
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1. Introduction
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document are to be interpreted as described in RFC 2119 [RFC2119].
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variable length prefix, the embedded IPv4 address, and a variable
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o When the prefix is 32 bits long, the IPv4 address is encoded in
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+-----------------------+------------+------------------------------+
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The Well-Known Prefix MUST NOT be used to represent non global IPv4
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served by IPv4-Translatable IPv6 addresses. Specifically, if a node
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combination of the prefix and the IPv4 address. In theory, routers
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router anycast address in IPv6 and network identifier in IPv4, the
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Translatable and the IPv4-Converted IPv6 addresses were constructed
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would not be able to support translation without modification. This
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throughout the network that packets are coming from an authorized
4.2. Secure Configuration
- The prefixes and formats need to be the configured consistently among
- multiple devices in the same network (e.g., nodes that need to prefer
- native over translated addresses, DNS gateways, and IPv4/IPv6
- translators). As such, the means by which they are learned/
- configured MUST be secure. Specifying a default prefix and/or format
- in implementations provides one way to configure them securely. Any
- alternative means of configuration is responsible for specifying how
- to do so securely.
+ The prefixes used for address translation are used by IPv6 nodes to
+ send packets to IPv6/IPv4 translators. Attackers could attempt to
+ fool nodes, DNS gateways, and IPv4/IPv6 translators into using wrong
+ values for these parameters, resulting in network disruption, denial
+ of service, and possible information disclosure. To mitigate such
+ attacks, network administrators need to ensure that prefixes are
+ configured in a secure way.
+
+ The mechanisms for achieving secure configuration of prefixes are
+ beyond the scope of this document.
5. IANA Considerations
-
-
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Congxiao Bao
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8. References
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Authors' Addresses
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Xing Li
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\f
projects / thirdparty / bind9.git / commitdiff
